EasyRotator prob

it was working fine yesterday, this morning, in place of the slide, i get:

Invalid rotator ID specified (path erc_29_1335637255 doesn't exist). Unable to display rotator.

and in the wp-admin i get:

EasyRotator Error!

The WordPress uploads directory (usually wp-content/uploads) doesn't exist or isn't writable. Please make sure this directory exists and is writable.

any idea why?